3897265906239 has 4 divisors (see below), whose sum is σ = 5196354541656. Its totient is φ = 2598177270824.

The previous prime is 3897265906231. The next prime is 3897265906327. The reversal of 3897265906239 is 9326095627983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3897265906239 - 2³ = 3897265906231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897265906231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649544317704 + ... + 649544317709.

It is an arithmetic number, because the mean of its divisors is an integer number (1299088635414).

Almost surely, 2^{3897265906239} is an apocalyptic number.

3897265906239 is a deficient number, since it is larger than the sum of its proper divisors (1299088635417).

3897265906239 is a wasteful number, since it uses less digits than its factorization.

3897265906239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299088635416.

The product of its (nonzero) digits is 264539520, while the sum is 69.

The spelling of 3897265906239 in words is "three trillion, eight hundred ninety-seven billion, two hundred sixty-five million, nine hundred six thousand, two hundred thirty-nine".